ntp issue 6509

[amit bhatnagar]

I have a network in which we have enabled MP-BGP , there are multiple VRF configured in network .

Location A we have NTP server with IP 10.1.1.1 in VRF-1 , on Location B we have 7 swicthes out of which 6 access swicthes  4948 I have configured NTP server on all siwtches and its working fine

But the core switch in Location B is not getting sync with NTP server . below is the config which I have put on Core switch

ntp server vrf VRF_1 10.1.1.1

But I can ping the ntp server from the core switch

ping vrf VRF_1 10.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms

Thanks for help

[Leo Laohoo]

What do you get when you run a debug?

What configuration do you have for your NTP?

What happens if you point your 6500 to NTP synch with your switches?

[acampbell · Accepted solution]

Hi Amit

Try forcing NTP to only use a single interface from the VRF

ntp server vrf VRF_1 10.1.1.1
ntp source

like :-

!
ntp server vrf VRF_1 10.1.1.1
ntp source loopback 1
!

Regards,
Alex.
Please rate useful posts.